example yahoo stock issue fix
Change 'charse_error' to 'charset_error' in load_files.

'charset_error' is the name used in the documentation; I changed the
function to match it. It checks and deprecates the old name.
Revise documentation about handling text and bytes.
Add a documentation section about decoding text.

This is a stage that has to happen before extracting features. Adding
this documentation helps address a bug report about UnicodeDecodeErrors.
Move the new "Decoding text files" doc section

It should come after the other section that describes text feature
extraction.
Revert "DOC spelling and clarification"

This reverts commit d40caea23f7b504c3d9fa201d98ac5187804697f.
Merge branch 'master' of https://github.com/scikit-learn/scikit-learn
pull request for issue 2116: ticker in yahoo was intermittent for
KFT resulting in a 404 error. It seemed when using ticker MDLZ for
kraft this was resolved. Probably a better fix would be to take out
kraft foods ticker all together. result was to see if there was any
more feedback before making the change.